Feng S.,Heilongjiang University |
Cao F.,Heilongjiang Agricultural Engineering Vocational College |
Lu B.,Harbin Normal University |
Cai Q.,Harbin Normal University
Journal of the Chinese Chemical Society | Year: 2014
A magnetically separable catalyst Al2O3-MgO/Fe3O4 was prepared by Al2O3-MgO supported on magnetic oxide Fe3O4 and charactered by FT-IR, XRD and SEM. The mixed oxides afforded high catalytic activity and selectivity for synthesis of 1-phenoxy-2-propanol from phenol and propylene oxide with 80.3% conversion and 88.1% selectivity to 1-phenoxy-2-propanol. Especially, facile separation of the catalyst by a magnet was obtained and the catalytic performance of the recovered catalyst was unaffected even at the forth run. A magnetically separable catalyst Al2O3-MgO/Fe3O4 was prepared by Al2O3-MgO supported on magnetic oxide Fe3O4. The mixed oxides afforded high catalytic activity and selectivity for synthesis of 1-phenoxy-2-propanol from phenol and propylene oxide. The facile separation and reusability of the catalyst was achieved. Copyright © 2014 The Chemical Society Located in Taipei & Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, Germany.
Song L.-H.,Heilongjiang Agricultural Engineering Vocational College |
Kang J.-Y.,Guangdong Industry Technical College
Advanced Materials Research | Year: 2011
In accordance with the latest development direction in the filed of strengthening the heat transfer technology of strengthening the heat transfer on division of strengthening heat transfer by international authoritative Professor A.E. Bergle), including 3D(three-dimensional) heat transfer of ultra-high performance improved in the fins of the design and analysis; 3D heat transfer strengthening of the plowing process mechanism the flexibility ,high speed and high precision of gathered tools and the realization of a 3D digital design and manufacturing. It also researches on the influential law of process parameters on the formation of the fin. It is shown that the whole fin-forming process can be classified into three stages:plowing,heaving and fins forming, and that the front angle,plowing depth and the plowing speed are the main factors influencing the fin forming. Moreover,within a certain range,the height of fin increases with the front angle and the plowing depth. © (2011) Trans Tech Publications.
Gao Y.X.,Northeast Forestry University |
Gao Y.X.,Heilongjiang Agricultural Engineering Vocational College |
Yang L.,Northeast Forestry University |
Zu Y.G.,Northeast Forestry University |
Yao L.P.,Northeast Forestry University
Advanced Materials Research | Year: 2014
An ultrasound-assisted procedure for the extraction of pectin from heads of Helianthus annuus L. (sunflower) was established. A Box-Behnken design (BBD) was employed to optimize the extraction temperature (X1: 30-50°C), extraction time (X2: 20-40 min) and pH (X3: 2.5-3.5) to obtain a high yield of pectin with high degree of esterification (DE) from sunflower heads. Analysis of variance showed that the contribution of a quadratic model was significant for the pectin extraction yield and DE. An optimization study using response surface methodology was performed and 3D response surfaces were plotted from the mathematical model. According to the RSM model, the highest pectin yield (23.11 ± 0.08%) and DE (39.85 ± 0.14%)can be achieved when the UAE process is carried out at 50°C for 40min using a hydrochloric acid solution of pH 3.0. These results suggest that ultrasound-assisted extraction could be a good option for the extraction of functional pectin from sunflower heads at industrial level. © (2014) Trans Tech Publications, Switzerland.
Sui C.,Northeast Agricultural University |
Zhang W.,Northeast Agricultural University |
Ye F.,Northeast Agricultural University |
Liu X.,Heilongjiang Agricultural Engineering Vocational College |
Yu G.,Northeast Agricultural University
Journal of Applied Polymer Science | Year: 2016
Guar gum (GG) was incorporated into soy protein isolate (SPI) films using a blending solution casting method to form SPI/GG composite films. The effects of SPI and GG contents on the transparency, water susceptibility, mechanical, and gas-barrier properties of SPI/GG composite films were analyzed. The results showed that SPI/GG composite films with added GG were much more tensile-resistant, water-resistant, gas-barrier properties but less deformable property than SPI control film. The presence of GG also improved film barrier to the light. The analysis results of contact angle measurement, Fourier transform infrared spectroscopy, and scanning electron microscope indicated that GG induced increased network compactness of the composite films which resulted from strong intermolecular interactions, such as hydrogen bonding, that existed between SPI and GG. Findings indicate that GG may be used as a natural means to improve specific properties of SPI films. © 2016 Wiley Periodicals, Inc.
Xu W.D.,HeiLongjiang Agricultural Engineering Vocational College |
Chen Q.,Northeast Agricultural University |
Ding Y.,Northeast Agricultural University |
Wang S.,Northeast Agricultural University |
And 2 more authors.
Advanced Materials Research | Year: 2013
This study includes the investigation of the chemical properties such as pH value and a*-value, sensorial evaluations, residual nitrite and the oxidation level of Chinese-style sausage-red sausage, which have been produced by both reducing the nitrite level(50mg/kg, 100mg/kg and 150mg/kg) and adding tomato powder(0%, 2% and 4%). According to the results, 100mg/kg of nitrite together with 2% tomato powder is better. Then the sausages produced with 100mg/kg nitrite and 2% tomato powder, along with sausage which produced with only 150mg/kg of nitrite are stored at 4 °C for 45 days. It was observed that addition of 2% of tomato powder increased degradation of nitrite and decreased the level of oxidation. This study provides a potential solution for nitrite substitute in meat products. © (2013)Trans Tech Publications,Switzerland.
Lv X.,Harbin Engineering University |
Lv X.,Heilongjiang Agricultural Engineering Vocational College |
Shi D.,Harbin Engineering University |
Wang Q.,Harbin Engineering University |
Liang Q.,Harbin Engineering University
Journal of Vibroengineering | Year: 2016
A unified solution for the in-plane vibration analysis of multi-span curved Timoshenko beams with general elastic boundary and coupling conditions by combining with the improved Fourier series method and Rayleigh-Ritz technique is presented in this paper. Under the current framework, regardless of boundary conditions, each of displacements and rotations of the curved Timoshenko beams is represented by the modified Fourier series consisting of a standard Fourier cosine series and several closed-form auxiliary functions introduced to ensure and accelerate the convergence of the series representation. All the expansion coefficients are determined by the Rayleigh-Ritz technique as the generalized coordinates. The convergence and accuracy of the present method are tested and validated by a lot of numerical examples for multi-span curved Timoshenko beams with various boundary restraints and general elastic coupling conditions. In contrast to most existing methods, the current method can be universally applicable to general boundary conditions and elastic coupling conditions without the need of making any change to the solution procedure. © JVE INTERNATIONAL LTD.
Wang W.,Heilongjiang Agricultural Engineering Vocational College |
Li N.,Heilongjiang Agricultural Engineering Vocational College
Applied Mechanics and Materials | Year: 2013
By means of the investigation of researching about roadside landscape elements and screening studies, I will study out three aspects, that are: Highway landscape, natural landscape of both sides of the road, the evaluation about the cultural landscape of the highway landscape on both sides of the road, and establishing of the highway landscape evaluation system, developing evaluation criteria, using the AHP to evaluate and analysis highway landscape, so that identify the factors that affect the highway landscape, and try to propose the idea and the measures to construct the highway, to provide a scientific basis to solve the highway ecological landscape restoration and highway landscape design, to coordinate highway traffic and ecological relationship of the landscape, and to promote the coordinated development of highway tourism, resources, environmental protection. © (2013) Trans Tech Publications, Switzerland.
Dai Y.,Heilongjiang Agricultural Engineering Vocational College |
Xie H.,Heilongjiang Agricultural Engineering Vocational College |
Du C.,Heilongjiang Agricultural Engineering Vocational College
Applied Mechanics and Materials | Year: 2012
Pumpkin is one of the major vegetable crops in cucurbit family. Due to its easy cultivation, high yield, long shelf life and abundant nutriments, pumpkin is very popular in China. In this paper, we study on the germplasm development and innovation of high quality edible pumpkin: Halixiang NO.1. We also discussed the species quality, characteristics and field management. © (2012) Trans Tech Publications, Switzerland.
Wang B.,Heilongjiang Agricultural Engineering Vocational College |
Song Q.,Heilongjiang Agricultural Engineering Vocational College |
Xu G.,Heilongjiang Agricultural Engineering Vocational College
Applied Mechanics and Materials | Year: 2013
A wind-driven feeding mechanism of high efficiency is designed according to the TRIZ theory and its mechanical structure innovative design based on the principle of energy conversion. It aims at delivering of small granular, cylindrical, flakes and other materials in machinery, pharmaceuticals, electronics and other industries by transmission mechanism such as the typical gear mechanism and linkage mechanism. The prototype is produced combined with the specific parameters of the common materials. The modular innovative design is adopted, including the transmission module, driver module and material feeding module. By the inspection of the actual operation, each design module of the produced prototype is stable and reliable. At the same time the effect of material transportation is good. © (2013) Trans Tech Publications, Switzerland.